OHA Drinking Water Services
PWS ID: 00869 ---- THE DALLES, CITY OF
Water Quality Alerts

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Alert Date Range: From to
Alert Type
 Alert ID Sample Date Alert Date Contact
Report		 Response
Time (Days)		 Location Analyte
 Result
 Current
Alert Level		 Current
MCL		 Units Sample Type Lab Sample ID SelectAtype FilterAlertDate
CEC ARCHIVE 05/28/1991 07/23/1991 C MANGANESE 0.028 0.3 MG/L -1939291 Alert Chem CEC0 1991-07-23
IOC ARCHIVE 05/28/1991 07/23/1991 C SODIUM 42.8 20 MG/L -1939170 Alert Chem IOC0 1991-07-23
CEC ARCHIVE 05/28/1991 07/23/1991 D MANGANESE 0.053 0.3 MG/L -1939116 Alert Chem CEC0 1991-07-23
IOC ARCHIVE 05/28/1991 07/23/1991 D SODIUM 35.9 20 MG/L -1938986 Alert Chem IOC0 1991-07-23
IOC ARCHIVE 05/27/1992 08/19/1992 D SODIUM 36 20 MG/L -1938985 Alert Chem IOC0 1992-08-19
IOC ARCHIVE 06/10/1992 08/19/1992 C SODIUM 41.9 20 MG/L -1939169 Alert Chem IOC0 1992-08-19
LCR CHEM1311 06/06/1993 03/21/2005 DIST-A COPPER 90TH % VALUE 1.86 1.35 MG/L Alert Chem LCR0 2005-03-21
IOC ARCHIVE 06/14/1993 11/10/1993 DA SODIUM 34.4 20 MG/L 30615-13 Alert Chem IOC0 1993-11-10
IOC ARCHIVE 06/14/1993 11/30/1993 BA THALLIUM 0.0012 0.001 0.002 MG/L 30615-12 Alert Chem IOC0 1993-11-30
IOC ARCHIVE 08/02/1993 11/30/1993 CA SODIUM 44.4 20 MG/L 30803-10 Alert Chem IOC0 1993-11-30
RAD ARCHIVE 08/18/1993 06/16/1993 D GROSS BETA PARTICLE ACTIVITY 25.9 50 50 pCi -1939165 Alert Chem RAD0 1993-06-16
IOC ARCHIVE 07/06/1994 08/24/1994 CA SODIUM 42.2 20 MG/L 40707-6 Alert Chem IOC0 1994-08-24
IOC ARCHIVE 07/06/1994 08/24/1994 DA SODIUM 35.2 20 MG/L 40707-5 Alert Chem IOC0 1994-08-24
TCR ARCHIVE 07/18/1994 08/04/1994 COLIFORM, TOTAL (TCR) Present Present Routine 3037 Alert TCR0 1994-08-04
IOC ARCHIVE 06/26/1995 09/11/1995 CA SODIUM 28.5 20 MG/L 56895 Alert Chem IOC0 1995-09-11
IOC ARCHIVE 06/26/1995 09/11/1995 DA SODIUM 28 20 MG/L 56896 Alert Chem IOC0 1995-09-11
TCR ARCHIVE 08/07/1995 09/05/1995 COLIFORM, TOTAL (TCR) Present Present Routine 3498 Alert TCR0 1995-09-05
IOC ARCHIVE 08/14/1996 11/06/1996 CA SODIUM 48.9 20 MG/L 9608-080-1 Alert Chem IOC0 1996-11-06
IOC ARCHIVE 09/04/1996 11/06/1996 D SODIUM 38.9 20 MG/L 9609-017-2 Alert Chem IOC0 1996-11-06
IOC ARCHIVE 08/26/1997 09/24/1997 C SODIUM 43 20 MG/L 81790 Alert Chem IOC0 1997-09-24
IOC ARCHIVE 08/11/1998 10/01/1998 CA SODIUM 42.4 20 MG/L 93106 Alert Chem IOC0 1998-10-01
IOC ARCHIVE 08/11/1998 10/01/1998 DA SODIUM 36.5 20 MG/L 93105 Alert Chem IOC0 1998-10-01
IOC ARCHIVE 09/14/1999 11/10/1999 CA SODIUM 40.8 20 MG/L 7149 Alert Chem IOC0 1999-11-10
IOC ARCHIVE 09/14/1999 11/10/1999 DA SODIUM 37.1 20 MG/L 7146 Alert Chem IOC0 1999-11-10
IOC ARCHIVE 08/30/2000 10/27/2000 CA SODIUM 47.3 20 MG/L 19526 Alert Chem IOC0 2000-10-27
IOC ARCHIVE 08/30/2000 10/27/2000 DA SODIUM 42.4 20 MG/L 19527 Alert Chem IOC0 2000-10-27
TCR ARCHIVE 10/09/2000 11/07/2000 COLIFORM, TOTAL (TCR) Present Present Routine 036 Alert TCR0 2000-11-07
DBP CHEM2099 05/07/2002 06/29/2006 DIST-A TOTAL TRIHALOMETHANES (TTHM) 0.024 0.08 0.08 MG/L 2205090098 Alert Chem CMCL DBP0 2006-06-29
DBP CHEM3139 05/07/2002 08/29/2008 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.06 0.06 0.06 MG/L 2205090100 Alert Chem CMCL DBP0 2008-08-29
TCR ARCHIVE 05/22/2002 06/06/2002 COLIFORM, TOTAL (TCR) Present Present Routine 1803 Alert TCR0 2002-06-06
Notice - Sodium CHEM180 07/31/2002 10/22/2002 EP-C SODIUM 42.7 20 MG/L 47199I Notice Sodium 2002-10-22
Notice - Sodium CHEM180 07/31/2002 10/22/2002 EP-D SODIUM 43.1 20 MG/L 47205I Notice Sodium 2002-10-22
DBP CHEM2099 08/06/2002 06/29/2006 DIST-A TOTAL TRIHALOMETHANES (TTHM) 0.019 0.08 0.08 MG/L 2208080086 Alert Chem CMCL DBP0 2006-06-29
DBP CHEM995 02/04/2003 11/19/2004 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.069 0.06 0.06 MG/L 2302050128 Alert Chem CMCL DBP0 2004-11-19
DBP CHEM995 02/04/2003 11/19/2004 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.062 0.06 0.06 MG/L 2302050129 Alert Chem CMCL DBP0 2004-11-19
DBP CHEM995 02/04/2003 11/19/2004 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.062 0.06 0.06 MG/L 2302050130 Alert Chem CMCL DBP0 2004-11-19
DBP CHEM995 02/04/2003 11/19/2004 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.06 0.06 0.06 MG/L 2302050131 Alert Chem CMCL DBP0 2004-11-19
TCR COLI449 07/29/2003 08/07/2003 DIST-A COLIFORM, TOTAL (TCR) Present Present Routine 3413 Alert TCR0 2003-08-07
Notice - Sodium CHEM510 07/30/2003 09/10/2003 EP-C SODIUM 44.7 20 MG/L 61105I Notice Sodium 2003-09-10
Notice - Sodium CHEM510 07/30/2003 09/10/2003 EP-D SODIUM 41.5 20 MG/L 61104I Notice Sodium 2003-09-10
TCR COLI753 10/20/2003 11/04/2003 DIST-A COLIFORM, TOTAL (TCR) Present Present Routine 3775 Alert TCR0 2003-11-04
DBP CHEM1685 11/12/2003 07/29/2005 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.06 0.06 0.06 MG/L 2311140204 Alert Chem CMCL DBP0 2005-07-29
DBP CHEM995 02/10/2004 11/19/2004 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.059 0.06 0.06 MG/L 2402130218 Alert Chem DBP0 2004-11-19
DBP CHEM995 02/10/2004 11/19/2004 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.051 0.06 0.06 MG/L 2402130219 Alert Chem DBP0 2004-11-19
DBP CHEM995 02/10/2004 11/19/2004 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.046 0.06 0.06 MG/L 2402130220 Alert Chem DBP0 2004-11-19
DBP CHEM995 02/10/2004 11/19/2004 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.053 0.06 0.06 MG/L 2402130221 Alert Chem DBP0 2004-11-19
DBP CHEM995 05/10/2004 11/19/2004 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.048 0.06 0.06 MG/L 2405120356 Alert Chem DBP0 2004-11-19
Notice - Sodium CHEM829 06/21/2004 08/11/2004 EP-C SODIUM 44.8 20 MG/L 73020I Notice Sodium 2004-08-11
Notice - Sodium CHEM829 06/22/2004 08/11/2004 EP-D SODIUM 39.8 20 MG/L 73075I Notice Sodium 2004-08-11
Notice - Sodium CHEM932 09/08/2004 10/19/2004 EP-C SODIUM 46.3 20 MG/L 75988I Notice Sodium 2004-10-19
Notice - Sodium CHEM932 09/08/2004 10/19/2004 EP-D SODIUM 40.7 20 MG/L 75986I Notice Sodium 2004-10-19
DBP CHEM1031 10/13/2004 12/10/2004 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.05 0.06 0.06 MG/L 2410140127 Alert Chem DBP0 2004-12-10
TCR COLI1639 10/27/2004 11/05/2004 DIST-A COLIFORM, TOTAL (TCR) Present Present Routine 5334 Alert TCR0 2004-11-05
Notice - Sodium CHEM1685 06/08/2005 07/29/2005 EP-C SODIUM 44 20 MG/L 85218I Notice Sodium 2005-07-29
Notice - Sodium CHEM1685 06/08/2005 07/29/2005 EP-D SODIUM 38.6 20 MG/L 85221I Notice Sodium 2005-07-29
TCR COLI2259 07/25/2005 08/03/2005 DIST-A COLIFORM, TOTAL (TCR) Present Present Routine 6545 Alert TCR0 2005-08-03
SOC CHEM1876 08/23/2005 01/11/2006 EP-C BHC-GAMMA (LINDANE) 0.000027 0.00002 0.0002 MG/L 88149S Alert Chem SOC0 2006-01-11
DBP CHEM2120 02/07/2006 08/04/2006 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.0621 0.06 0.06 MG/L F117102 Alert Chem CMCL DBP0 2006-08-04
Notice - Sodium CHEM2168 08/08/2006 09/20/2006 EP-C SODIUM 43.6 20 MG/L 10373 Notice Sodium 2006-09-20
Notice - Sodium CHEM2181 08/28/2006 09/28/2006 EP-D SODIUM 40.6 20 MG/L 11198 Notice Sodium 2006-09-28
DBP CHEM2336 11/07/2006 02/20/2007 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.0623 0.06 0.06 MG/L F289602 Alert Chem CMCL DBP0 2007-02-20
DBP CHEM2336 11/07/2006 02/20/2007 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.0618 0.06 0.06 MG/L F289603 Alert Chem CMCL DBP0 2007-02-20
DBP CHEM2336 11/07/2006 02/20/2007 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.0666 0.06 0.06 MG/L F289604 Alert Chem CMCL DBP0 2007-02-20
DBP CHEM2336 11/07/2006 02/20/2007 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.0747 0.06 0.06 MG/L F289605 Alert Chem CMCL DBP0 2007-02-20
Notice - Sodium CHEM2613 08/06/2007 10/01/2007 EP-C SODIUM 45.8 20 MG/L 23909 Notice Sodium 2007-10-01
Notice - Sodium CHEM2680 09/17/2007 10/29/2007 EP-D SODIUM 41.7 20 MG/L 25502 Notice Sodium 2007-10-29
Notice - Sodium CHEM3202 08/19/2008 10/20/2008 EP-C SODIUM 45.1 20 MG/L 38078-I Notice Sodium 2008-10-20
DBP CHEM3531 05/19/2009 06/04/2009 06/12/2009 8 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.0748 0.06 0.06 MG/L I176702DL Alert Chem CMCL DBP0 2009-06-04
DBP CHEM3531 05/19/2009 06/04/2009 06/12/2009 8 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.0747 0.06 0.06 MG/L I176703DL Alert Chem CMCL DBP0 2009-06-04
VOC CHEM3664 08/04/2009 09/04/2009 09/04/2009 0 EP-A XYLENES 0.0009 0.0005 10 MG/L 52064A-V Alert Chem VOC0 2009-09-04
Notice - Sodium CHEM3664 08/04/2009 09/04/2009 09/04/2009 0 EP-B SODIUM 20.2 20 MG/L 52059-I Notice Sodium 2009-09-04
Notice - Sodium CHEM3664 08/04/2009 09/04/2009 09/04/2009 0 EP-C SODIUM 44.9 20 MG/L 52061-I Notice Sodium 2009-09-04
Notice - Sodium CHEM3776 08/18/2009 10/14/2009 EP-D SODIUM 42 20 MG/L 52587-I Notice Sodium 2009-10-14
Notice - Sodium CHEM4333 07/20/2010 09/02/2010 EP-C SODIUM 32.3 20 MG/L 66255-I Notice Sodium 2010-09-02
Notice - Sodium CHEM4333 07/21/2010 09/02/2010 EP-D SODIUM 37.6 20 MG/L 66338-I Notice Sodium 2010-09-02
DBP CHEM4601 11/30/2010 12/10/2010 12/15/2010 5 DIST-A TOTAL HALOACETIC ACIDS (HAA5) 0.0784 0.06 0.06 MG/L J334204-D Alert Chem CMCL DBP0 2010-12-10
Notice - Sodium CHEM5000 07/20/2011 08/19/2011 EP-C SODIUM 42.3 20 MG/L 110756501-I Notice Sodium 2011-08-19
Notice - Sodium CHEM5053 08/23/2011 09/22/2011 EP-D SODIUM 44.8 20 MG/L 110859801-I Notice Sodium 2011-09-22
Notice - Sodium CHEM5492 07/24/2012 08/28/2012 EP-C SODIUM 45.9 20 MG/L 120761801-I Notice Sodium 2012-08-28
Notice - Sodium CHEM5492 07/24/2012 08/28/2012 EP-D SODIUM 42.6 20 MG/L 120762101-I Notice Sodium 2012-08-28
Notice - Sodium CHEM5939 08/14/2013 09/17/2013 EP-C SODIUM 44.6 20 MG/L 130839001-I Notice Sodium 2013-09-17
Notice - Sodium CHEM6090 11/13/2013 12/06/2013 EP-D SODIUM 40.9 20 MG/L 131134401-I Notice Sodium 2013-12-06
Notice - Sodium CHEM6451 08/13/2014 10/01/2014 EP-B SODIUM 20 20 MG/L 440857155-I Notice Sodium 2014-10-01
Notice - Sodium CHEM6451 08/13/2014 10/01/2014 EP-C SODIUM 45 20 MG/L 440857157-I Notice Sodium 2014-10-01
Notice - Sodium CHEM6451 08/13/2014 10/01/2014 EP-D SODIUM 43 20 MG/L 440857156-I Notice Sodium 2014-10-01
Notice - Sodium CHEM6881 08/18/2015 09/23/2015 EP-C SODIUM 42 20 MG/L 201506240082-I Notice Sodium 2015-09-23
Notice - Sodium CHEM6881 08/18/2015 09/23/2015 EP-D SODIUM 43 20 MG/L 201506240083-I Notice Sodium 2015-09-23
SOC CHEM7289 08/23/2016 09/16/2016 09/16/2016 0 EP-D PICLORAM 0.0001 0.0001 0.5 MG/L 201608150030-S Alert Chem SOC0 2016-09-16
Notice - Sodium CHEM7366 08/23/2016 10/27/2016 EP-C SODIUM 42 20 MG/L 201608150035-I Notice Sodium 2016-10-27
Notice - Sodium CHEM7366 08/23/2016 10/27/2016 EP-D SODIUM 43 20 MG/L 201608150036-I Notice Sodium 2016-10-27
LCRE LCRE22353 07/01/2017 08/15/2017 EP-D LCR EXCURSION 1 >0 Alert Chem LCRE0 2017-08-15
Notice - Sodium CHEM7729 08/23/2017 10/16/2017 EP-C SODIUM 46 20 MG/L V7H052402-I Notice Sodium 2017-10-16
Notice - Sodium CHEM7729 08/23/2017 10/16/2017 EP-D SODIUM 46 20 MG/L V7H052403-I Notice Sodium 2017-10-16
LCRE LCRE24593 07/01/2018 01/04/2019 01/08/2019 4 DIST-A LCR EXCURSION 3 >0 Alert Chem LCRE0 2019-01-04
Notice - Sodium CHEM8081 08/16/2018 09/21/2018 EP-C SODIUM 44 20 MG/L V8H037502 Notice Sodium 2018-09-21
Notice - Sodium CHEM8081 08/16/2018 09/21/2018 EP-D SODIUM 44 20 MG/L V8H037501 Notice Sodium 2018-09-21
LCRE LCRE25821 08/01/2019 09/18/2019 09/20/2019 2 EP-A LCR EXCURSION 1 >0 Alert Chem LCRE0 2019-09-18
Notice - Sodium CHEM8636 08/14/2019 10/23/2019 EP-C SODIUM 44 20 MG/L B9H225805-I Notice Sodium 2019-10-23
Notice - Sodium CHEM8636 08/14/2019 10/23/2019 EP-D SODIUM 43 20 MG/L B9H225806-I Notice Sodium 2019-10-23
LCRE LCRE27587 08/01/2020 09/10/2020 09/14/2020 4 EP-C LCR EXCURSION 2 >0 Alert Chem LCRE0 2020-09-10
Notice - Sodium CHEM9043 08/11/2020 08/28/2020 EP-B SODIUM 20 20 MG/L VDH027402-I Notice Sodium 2020-08-28
Notice - Sodium CHEM9043 08/11/2020 08/28/2020 EP-C SODIUM 44 20 MG/L VDH027403-I Notice Sodium 2020-08-28
Notice - Sodium CHEM9043 08/11/2020 08/28/2020 EP-D SODIUM 45 20 MG/L VDH027404-I Notice Sodium 2020-08-28
Notice - Sodium CHEM9454 08/18/2021 09/15/2021 EP-B SODIUM 20 20 MG/L 202108190356-I Notice Sodium 2021-09-15
Notice - Sodium CHEM9454 08/18/2021 09/15/2021 EP-C SODIUM 42 20 MG/L 202108190355-I Notice Sodium 2021-09-15
Notice - Sodium CHEM9454 08/18/2021 09/15/2021 EP-D SODIUM 42 20 MG/L 202108190366-I Notice Sodium 2021-09-15
LCRE LCRE31368 07/01/2022 08/08/2022 08/09/2022 1 EP-D LCR EXCURSION 1 >0 Alert Chem LCRE0 2022-08-08
Notice - Sodium CHEM9880 08/09/2022 09/07/2022 EP-B SODIUM 20 20 MG/L 380-15716-2-I Notice Sodium 2022-09-07
Notice - Sodium CHEM9880 08/09/2022 09/07/2022 EP-C SODIUM 43 20 MG/L 380-15716-3-I Notice Sodium 2022-09-07
Notice - Sodium CHEM9880 08/09/2022 09/07/2022 EP-D SODIUM 44 20 MG/L 380-15716-4-I Notice Sodium 2022-09-07
LCRE LCRE31893 10/01/2022 11/07/2022 11/08/2022 1 EP-B LCR EXCURSION 4 >0 Alert Chem LCRE0 2022-11-07
Notice - Sodium IOC-36 08/02/2023 09/18/2023 EP-C SODIUM 44 20 MG/L VGH0105-03-I Notice Sodium 2023-09-18
Notice - Sodium IOC-37 08/02/2023 09/18/2023 EP-D SODIUM 44 20 MG/L VGH0105-04-I Notice Sodium 2023-09-18
TCR TCR-900 09/11/2023 09/13/2023 09/18/2023 5 DIST-A COLIFORM, TOTAL (TCR) Present Present Routine 213129 Alert TCR0 2023-09-13


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